[folded-merged] mm-gup-handle-huge-pmd-for-follow_pmd_mask-fix.patch removed from -mm tree

[folded-merged] mm-gup-handle-huge-pmd-for-follow_pmd_mask-fix.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: fixup! mm/gup: handle huge pmd for follow_pmd_mask()
has been removed from the -mm tree.  Its filename was
     mm-gup-handle-huge-pmd-for-follow_pmd_mask-fix.patch

This patch was dropped because it was folded into mm-gup-handle-huge-pmd-for-follow_pmd_mask.patch

------------------------------------------------------
From: Peter Xu <peterx@redhat.com>
Subject: fixup! mm/gup: handle huge pmd for follow_pmd_mask()
Date: Tue, 2 Apr 2024 21:32:48 -0400

Allow follow_pmd_mask() to take hugetlb tail pages.  The old warnings do
not help now as hugetlb now allows it to happen, so drop them.

Link: https://lkml.kernel.org/r/20240403013249.1418299-3-peterx@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
Reported-by: Ryan Roberts <ryan.roberts@arm.com>
Tested-by: Ryan Roberts <ryan.roberts@arm.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Andrew Jones <andrew.jones@linux.dev>
Cc: Aneesh Kumar K.V (IBM) <aneesh.kumar@kernel.org>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: James Houghton <jthoughton@google.com>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Lorenzo Stoakes <lstoakes@gmail.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: "Mike Rapoport (IBM)" <rppt@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Rik van Riel <riel@surriel.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Yang Shi <shy828301@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/gup.c |    3 ---
 1 file changed, 3 deletions(-)

--- a/mm/gup.c~mm-gup-handle-huge-pmd-for-follow_pmd_mask-fix
+++ a/mm/gup.c
@@ -632,8 +632,6 @@ static struct page *follow_huge_pmd(stru
 	assert_spin_locked(pmd_lockptr(mm, pmd));
 
 	page = pmd_page(pmdval);
-	VM_BUG_ON_PAGE(!PageHead(page) && !is_zone_device_page(page), page);
-
 	if ((flags & FOLL_WRITE) &&
 	    !can_follow_write_pmd(pmdval, page, vma, flags))
 		return NULL;
@@ -662,7 +660,6 @@ static struct page *follow_huge_pmd(stru
 
 	page += (addr & ~HPAGE_PMD_MASK) >> PAGE_SHIFT;
 	ctx->page_mask = HPAGE_PMD_NR - 1;
-	VM_BUG_ON_PAGE(!PageCompound(page) && !is_zone_device_page(page), page);
 
 	return page;
 }
_

Patches currently in -mm which might be from peterx@redhat.com are

mm-userfaultfd-reset-ptes-when-close-for-wr-protected-ones.patch
mm-hmm-process-pud-swap-entry-without-pud_huge.patch
mm-gup-cache-p4d-in-follow_p4d_mask.patch
mm-gup-check-p4d-presence-before-going-on.patch
mm-x86-change-pxd_huge-behavior-to-exclude-swap-entries.patch
mm-sparc-change-pxd_huge-behavior-to-exclude-swap-entries.patch
mm-arm-use-macros-to-define-pmd-pud-helpers.patch
mm-arm-redefine-pmd_huge-with-pmd_leaf.patch
mm-arm64-merge-pxd_huge-and-pxd_leaf-definitions.patch
mm-powerpc-redefine-pxd_huge-with-pxd_leaf.patch
mm-gup-merge-pxd-huge-mapping-checks.patch
mm-treewide-replace-pxd_huge-with-pxd_leaf.patch
mm-treewide-remove-pxd_huge.patch
mm-arm-remove-pmd_thp_or_huge.patch
mm-document-pxd_leaf-api.patch
selftests-mm-run_vmtestssh-fix-hugetlb-mem-size-calculation.patch
mm-kconfig-config_pgtable_has_huge_leaves.patch
mm-hugetlb-declare-hugetlbfs_pagecache_present-non-static.patch
mm-make-hpage_pxd_-macros-even-if-thp.patch
mm-introduce-vma_pgtable_walk_beginend.patch
mm-arch-provide-pud_pfn-fallback.patch
mm-gup-drop-folio_fast_pin_allowed-in-hugepd-processing.patch
mm-gup-refactor-record_subpages-to-find-1st-small-page.patch
mm-gup-handle-hugetlb-for-no_page_table.patch
mm-gup-cache-pudp-in-follow_pud_mask.patch
mm-gup-handle-huge-pud-for-follow_pud_mask.patch
mm-gup-handle-huge-pmd-for-follow_pmd_mask.patch
mm-gup-handle-hugepd-for-follow_page.patch
mm-gup-handle-hugetlb-in-the-generic-follow_page_mask-code.patch
mm-allow-anon-exclusive-check-over-hugetlb-tail-pages.patch
mm-free-non-hugetlb-large-folios-in-a-batch-fix.patch
mm-hugetlb-assert-hugetlb_lock-in-__hugetlb_cgroup_commit_charge.patch
mm-page_table_check-support-userfault-wr-protect-entries.patch